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Technology update

Feb 24, 2003

Single molecule switches for less

Switches made from single molecules could greatly reduce the power consumed by electronic devices, compared to present-day solid-state integrated circuits. Ernst Meyer and Christian Joachim and colleagues from the University of Basle, IBM Zurich and the CEMES-CNRS Lab in Toulouse have now created the lowest energy single-molecule switch to date. It requires only 47 zeptojoules - 47 x 10^-21 joules or 0.3 eV - to operate, which is 10 000 times less than the power needed in the transistor switches currently used in high-speed computers (C Loppacher et al. 2003 Phys. Rev. Lett. 90 066107).

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